I have amanos with angels a long time ago (like four years ago) in a 30H. I didn't see the eight shrimp for a year or more, then one day my 30-year-old tank sprung a leak and I drained it and cleared it out...low and behold under the rocks in gravel cavities were my eight amano shrimp.
They had just become adept at hiding and coming out only at night so I never saw them.
They had just become adept at hiding and coming out only at night so I never saw them.